Automobile finish paint and preparation method thereof

A technology for automotive topcoats and coatings, applied in the field of automotive topcoats and their preparations, can solve the problems of non-densification, poor mechanical properties, soft resin, etc., and achieve the effect of excellent antifouling and excellent thermal conductivity

Active Publication Date: 2022-03-22
清远华湾材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The resin used in existing self-healing coatings is soft, not dense, has poor mechanical properties and is not wear-resistant
In addition, the healing and repairing ability of the

Method used

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  • Automobile finish paint and preparation method thereof
  • Automobile finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] This embodiment provides an automobile topcoat coating and a preparation method thereof, wherein the car's facet coating comprises a component having a weight component: 20 parts of the polyurethane acrylate resin, 20 servants of the epoxy acrylate, and 5 chitosan. , 8 parts of polyethylvinyl chloride / vinyl ether resin, hydrophobic modified nano silica 2, nano silicon carbide, 0.5 parts by weight of the dispersant-propylene oxide, defoamer polyether modified silicone 0.1 parts by weight, graft polyether polyester modified organosiloxane 0.2 parts by weight, 0.5 parts by weight of anti - deposit, 3 parts by weight of the crystalline stone powder filler.

[0031] The preparation method of the above-mentioned automotive topcoat coating includes the following steps:

[0032] S1: Preparation of hydrophobic modified nanosilica: After stirring nano silica and 0.1 mol / l NaOH solution at room temperature for 50 min, filter the base liquid and flush the nano si...

Example Embodiment

[0034] Example 2

[0035] This embodiment provides a cargo paint, and the difference from Example 1 is only the composition of the coating, and the car paint coating comprises a component of the following weight:

[0036] 18 parts of polyurethane acrylate resin, 12 parts of epoxy acrylate, 3 parts of chitosan, 15 polyfluoroethylene resins, hydrophobic modified nano silica 3, nano silicon carbide, dispersant-propylene oxide 0.2 parts by weight, defoamer polyether modified silicone 0.5 parts by weight, grate polyether polyester modified organosiliciloxane 0.1 parts by weight, 0.5 parts by weight of anti-sediment, 5 parts by weight of color fat.

Example Embodiment

[0037] Example 3

[0038] This embodiment provides an automobile topcoat coating, the difference from Example 1 is only different in the composition of the coating, and the car paint surface coating comprises a component of the following weight:

[0039] 18 parts of polyurethane acrylate resin, 6 parts of an epoxy acrylate, 3 parts of chitosan, 12 polyfluoroethylene resins, hydrophobic modified nano silicon dioxide 4, 4 parts of nanocarbide, dispersant ring polydil glycerin Ether 0.5 parts by weight, defoamer polyether modified silicone 0.1 parts by weight, grate polyether polyester modified organosiloxane 0.1 parts by weight, 0.3 parts by weight of anti-sediment, 4 parts by weight of color fat.

[0040] The self-healing repair performance of Example 1 to 3 coating is detected in accordance with the method specified in GB / T1743-89, and the gloss removal rate and scratch repair time after scratch repair are indicated by the scratch repair effect; refer to GB / 1720-89 The lacquer...

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PUM

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Abstract

The invention belongs to the technical field of automobile coatings, and particularly relates to an automobile finish coating and a preparation method thereof. The automobile finish paint is prepared from the following components in parts by weight: 24 to 50 parts of acrylic resin, 3 to 5 parts of chitosan, 8 to 16 parts of fluorocarbon resin, 2 to 5 parts of hydrophobic modified nano silicon dioxide and 4 to 9 parts of nano silicon carbide. The acrylic resin and the chitosan are compounded, the chitosan and the acrylic resin can be quickly cross-linked to form a net-shaped structure during curing and film forming, and a formed paint film has self-healing capacity after being scratched; meanwhile, the fluorocarbon resin and the hydrophobic modified nano silicon dioxide are compounded to achieve the optimal wear-resistant effect; the nano silicon carbide has excellent heat-conducting property, so that the finish paint film can be self-healed to repair scratches under the condition of natural light, and the comprehensive performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of automobile coatings, and in particular relates to an automobile topcoat and a preparation method thereof. Background technique [0002] The self-healing coating of the car topcoat can make the car body encounter scratches or slight collisions, and the small scratches can be automatically eliminated in a short period of time, or eliminated under natural light conditions, so as to effectively protect the car paint. [0003] The resins used in existing self-healing coatings are soft, not compact, have poor mechanical properties and are not wear-resistant. In addition, the healing and repairing ability of the paint film formed by the existing paint of this type is limited, and it has a one-time repairing effect on the same scratch position, and has poor repairing performance on secondary scratches. Contents of the invention [0004] Aiming at the problems existing in the prior art, the present invention ai...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D163/10C09D105/08C09D127/12C09D127/14C09D7/61C09D7/62C09D7/65
CPCC09D175/14C09D163/10C09D7/61C09D7/62C09D7/65C08K2201/011C08L63/10C08L5/08C08L27/12C08K9/06C08K9/02C08K3/36C08K3/34C08L75/14C08L27/14
Inventor 郭逍遥汤汉良卢承大雷斯敏刘凯郭伟杰刘其平赖浩城
Owner 清远华湾材料研究院有限公司
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